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what is a metal gear box?

i was looking at getting a jg ak47, and it says it has a metal gear box. what does this mean?

heres a link

http://www.hitguns.com/JG-AK47-RIS-Black-Airsoft-G...

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    A Metal Gear Box (MGB) is as opposed to a Plastic Gear Box (PGB). only MPEG's and up have MGB's, low-end LPEG's have PGB. Metal is obviously a stronger material than plastic, so it will last longer. the function of this piece is usually as a selector switch (choosing from semi/full/safe) and is a housing for the gears of your gun, and even the spring (if i'm not mistaken), so having a strong, long lasting material where many vital components are located at is very important.

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